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Frustration-induced multiferroicity in hauerite MnS2
Abstract
Pyrite-type mineral hauerite MnS2 is a magnetic insulator with localized S=5/2 moments. Below 48 K, it develops a collinear antiferromagnetic order, accompanied by unit-cell doubling and breaking the inversion symmetry. We demonstrate that the latter gives rise to a ferroelectric polarization of up to 360 μC/m2 rendering MnS2 a type-II multiferroic. Microscopically, the electronic polarization originates from S2 dimers that acquire a dipole moment induced by the frustrated magnetic ordering of neighboring Mn sites. We show that time-reversal symmetry leaves ferroelectric domains intact, and that domain switching necessitates overcoming a high energy barrier set by the magnetic exchange energy scale.
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BibTeX
@misc{kocsis2026frustrationinduced,
title = {{Frustration-induced multiferroicity in hauerite MnS2}},
author = {Vilmos Kocsis and Harish K. Singh and Kranthi K. Bestha and Yaqian Guo and Maxim Mostovoy and Jeroen van den Brink and Oleg Janson},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.01990},
eprint = {2610.01990},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.01990},
}
RIS
TY - UNPB
TI - Frustration-induced multiferroicity in hauerite MnS2
AU - Vilmos Kocsis
AU - Harish K. Singh
AU - Kranthi K. Bestha
AU - Yaqian Guo
AU - Maxim Mostovoy
AU - Jeroen van den Brink
AU - Oleg Janson
PY - 2026
DA - 2026/10/01
PB - arXiv
DO - 10.48550/arxiv.2610.01990
UR - https://arxiv.org/abs/2610.01990
AB - Pyrite-type mineral hauerite MnS_2 is a magnetic insulator with localized S=5/2 moments. Below 48 K, it develops a collinear antiferromagnetic order, accompanied by unit-cell doubling and breaking the inversion symmetry. We demonstrate that the latter gives rise to a ferroelectric polarization of up to 360 μC/m^2 rendering MnS_2 a type-II multiferroic. Microscopically, the electronic polarization originates from S_2 dimers that acquire a dipole moment induced by the frustrated magnetic ordering of neighboring Mn sites. We show that time-reversal symmetry leaves ferroelectric domains intact, and that domain switching necessitates overcoming a high energy barrier set by the magnetic exchange energy scale.
ER -